JPEG(Joint Photographic Experts Group)
JPGs can be imported into Microsoft Word or PowerPoint.

TIFF(Tagged Image File Format)
Use only when EPS is not an option.
(This is also the largest file size, suggested for use in applications such as Acrobat, Illustrator, Photoshop, Quark. It can also be imported into Microsoft Word.)

EPS(Extended Post Script)
This is the best choice for high-resolution printing.
Suggested for use in applications such as Illustrator, Photoshop and Quark.